Primary Collection of Cheats
Password Codes
X-z-uJ lls0W0 fVvweG 000WNr - 215 missiles, 5 energy tanks, all powerups, both mini-bosses dead.
000000 000000 03-200 000089 - 255 missiles, but no missile tanks.
222222 222222 UUUUUU UUUUUU - Another strange code, no Morph ball.
M7---- --zOA0 2T-tfm a000d5 - Atop Tourian.
000000 000000 080h00 0000gu - Begin with missiles but no missiles in Kraid's lair.
000000 000001 00F300 00008X - Begin with missiles, but no missile tanks in Ridley's lair.
X----- --N?WO dV-Gm9 W01GMI - Best Ending.
ITs-JU ST-YOU ZIPO-- ----Ci - Brgin in Nofair, Mother Brain killed, Maru Mari, Varia, 212 missiles.
JUSTIN BAILEY ------ ------ - Everything except the Ice Beam at last boss.
00U--- -u0000 0AFw9Y 1800sb - Fight Ridley.
y54I04 0G9040 0B--00 0000YE - Gather energy untill all the tanks are full, then go straight up to Mother Brain. Gives you everything you need to beat the game.
NARPAS SWORD0 000000 000000 - Invincibility and Infinite Missiles.
mMuiS1 II6-GE Jls?h0 m00WRM - No suit and All Weapons.
333333 333333 KKKKKK KKKKKK - Odd code, takes you to title screen.
000000 000020 000000 000020 - Start as suitless samus with no items.
XXXXXX XXXXXX KKKKKK KKKKKK - Start in Tourian, with 1 energy tank and 48 missles. You have virtually no powerups and you are stuck. You are also playing as armorless Samus.
000000 000000 0Fy000 00003- - Start with 255 missiles.
000000 000000 4G0000 00000H - Start with Bombs (and Maru Mari).
000000 000000 080000 0000Y8 - Start with Ice Beam.
000000 000000 100000 000004 - Start with Long Beam.
000000 00000G 7?2ruA 005WFh - Start with Suitless Samus, 5 Missiles, All Upgrades, No Energy Tanks.
000000 000000 040000 0000X8 - Start with Wave Beam.
CONTIN UE_MY_ GAMEMI NIBOSS - Starts you in the beginning with armorless Samus and no powerups. Can enter Tourian from the start.
999999 999999 KKKKKK KKKKKK - Strange code, No varia, or mother brain.
00WX00 2W0000 41TW1o 0000lD - Suitless Samus.
V----- -r-e69 t?A00e 00M04p - Start at Tourian, fully powered, ready for the 2nd ending.
X----- --N?WO dVue08 001GL2 - Start at Tourian, fully powered, ready for the 3rd ending.
OV---- --r-e6 9t?A08 000GTq - Start at Tourian, fully powered, ready for the 4th ending.
7----- -zVw1Y T-YW01 -W5WCl - Start at Tourian, fully powered, ready for the 5th ending.
5X---- ---N?W OdVue0 0000iu - Start at Tourian, fully powered, ready for the best ending.
0iF--- ---w-q 3ax-50 0000wx - Start at Tourian, fully powered, suitless Samus, ready for the best ending.
Quick End
Any time in the game you need to quit fast press [Start] on first controller, then press [Up]+[A] on the second controller.
Hints
Unlock Suitless Samus
Beat the game in under 2 hours, and then at the password screen press [Start].
Climb up Walls
On most levels with the doors you shoot to cause them to open you can use a door to climb up many many walls/levels above. Simply shoot the door and stand with the front 1/2 of Samus wedged where the door will reform. After you are partially "sealed" by the door just quickly tap up and down on the control pad. You will slowly climb up the wall. It is possible to get stuck while using this trick.
Morph Ball "Double" Jump
Turn into the Morph Ball, and slide off a platform or any other surface that allows Samus to stand in the air as Morph Ball. While in mid-air, press [Up], and Samus will now be standing on her feet without any ground below her (She will be doing this still in mid-air), then quicly press [A] to perform an jump from the standing position you were placed. This trick will only work as long as Samus's sprite is stationary, this means that if you hit the D-Pad from you standing position, you will not be able to Morph Ball Double Jump.
Skip Kraid and Ridley
You have to have gone far enough to get the Ice beam. Now go to the room where the bridge needs to be formed and there's the statues of Ridley and Kraid. Before you enter that room, have the winged enemy chase you and hit you as you are going through the door. If done correctly, the enemy follows you into the next room. Simply freeze him and use him as a stepping stone to get across the gap - without beating Ridley or Kraid. You can theoretically beat the game in under 20 minutes by using this glitch.